Memory concept

On the E38, the positions for seat adjustments, steering column adjustment and mirror adjustment can be stored with the memory system.

Following control units are necessary to store all positions:

• All seat and steering column positions are stored in the seat/steering column memory control unit (SM/LSM) in the seat adjustment switch.
  
• The mirror positions are stored in the peripheral module driver's and passenger's door (PMFT or PMBFT).
  
• The basic prerequisite for operation of the memory system is that the peripheral module in the driver's door (PMFT) is installed.The programming and selector switch is connected to this module.The PMFT evaluates the status of the switch and transfers the defined status to the P-bus.
  
• The general module is used in the memory system as a central memory for diagnosis data and as a connection point to the diagnosis computer.
  
• The control units are mounted in the vehicle relevant to their function and are interlinked via the P-bus link.
  
• In the E-38 memory system, the information concerning the status of the memory switch is transferred via the P-bus.Each control unit individually evaluates the P-bus data concerning the status of the memory switch and carries out the necessary adjustments independently.